EXTRACTED FROM THE PROCEEDINGS 
OF THE 
ENTOMOLOGICAL SOCIETY OF LONDON 
Of 20th March, 1895. 
Mr. F. Merrifield exhibited some Limenitis sibylla, the 
pup of which had been subjected to extreme temperatures. 
A temperature of 85° to 90° was fatal to most; in those 
which survived the black ground-colour is pale and freckled, 
and there is some increase in the reddish scales near the apex 
of the forewings and the anal angle of the hindwings ; and on 
the underside the orange-brown ground-colour is increased in 
area and is much lighter and more orange in its colouring. 
The pupz endured cold better than heat. Icing from 8 to 40 
days, followed by a normal temperature for 12 to 14 days, 
produced no sensible alteration of markings or colouring, but 
an exposure to a temperature of about 48° for 22 days and 
up to 86 days caused a sprinkling of the white band with 
black scales ; the most sensitive part in this respect is in the 
hindwings, the interspace between the costa and the next 
nervure ; here it is so dense as to turn the white to a dull 
grey. On the underside this cooling caused a slight increase 
in the area and intensity of some of the darker parts, but 
this was counteracted by a tendency to suffusion and 
spreading of any white parts. He thought that this species 
would bear a longer exposure to a low temperature than he 
had ventured on trying. He also showed a long series of 
Vanessa C-album, the larvee of which had been kindly sent him, 
in May last, by Mr. Allan Nesbitt of Llandogo, Monmouth- 
shire. Though subjected to more severe cold and for longer 
periods than those experimented on in 1893, as recorded in the 
